import java.util.Scanner;

/**
   Reads a string, reverses the order the characters within the
   string, and prints out the result.
   Input: the value of s, a string
   Output: the string reversed
*/
public class ReverseString
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();

      String reversed="";
      
      
      // your work here      
      int n=s.length();
      
      for(int i=n-1;i>=0;i--) {
         reversed += s.charAt(i);
      }


      System.out.println(reversed);
   }
}